The Siemens 6ES7223-1BH30-0XB0 is a SIMATIC S7-1200 digital input module with 8 inputs rated at 24 VDC. It supports diagnostic alarms and is parameterizable, with a typical power loss of 2.5 W. Signal thresholds are 5 V DC at 1 mA for a '0' and 15 V DC at 2.5 mA for a '1'; switching times are 50 µs (0→1) and 200 µs (1→0).
Field notes
Ambient operating range -40 to 70 °C suits unheated cabinets or outdoor enclosures. Cable runs: unshielded up to 150 m, shielded up to 500 m. A front connector is required; short-circuit protection must be provided externally.